title: Mobility on the reconstructed Pt(100)-hex surface in ethylene and in its mixture with hydrogen and carbon monoxide.
abstract: By using high-pressure scanning tunneling microscopy and ambient-pressure X-ray photoelectron spectroscopy, we studied the mobility along with composition, structure and reactivity on the Pt(100)-hex surface. Adsorbates are mobile under 1 Torr of C2H4 and C2H4-H2 mixtures, but adding 3 mTorr of CO quenches the mobility. Ethylene-related adsorbates can also weaken Pt-Pt bonds and thus facilitate displacements in the hexagonal layer.
authors.affiliation: Department of Chemistry, University of California, Berkeley, California 94720, USA.
authors.forename: Derek R
authors.initials: DR
authors.lastname: Butcher
authors.forename: Zhongwei
authors.initials: Z
authors.lastname: Zhu
authors.forename: Baohua
authors.initials: B
authors.lastname: Mao
authors.forename: Hailiang
authors.initials: H
authors.lastname: Wang
authors.forename: Zhi
authors.initials: Z
authors.lastname: Liu
authors.forename: Miquel
authors.initials: M
authors.lastname: Salmeron
authors.forename: Gabor A
authors.initials: GA
authors.lastname: Somorjai
mesh_terms: D002248:Carbon Monoxide / Q000737:chemistry*; D005030:Ethylenes / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D015394:Molecular Structure; D010316:Particle Size; D010984:Platinum / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D005030:Ethylenes; D010984:Platinum; D002248:Carbon Monoxide; D006859:Hydrogen; C036216:ethylene